摘要
在平均温度16.5℃,相对湿度75%的条件下,根据种蛋的保存时间(1～3d、4～6d、7～9d,10～12d)、放置方式(锐端向上、锐端向下)、翻蛋与否,将入孵蛋分为16个处理组,与大批量的种蛋同机孵化。实验结果表明:保存条件对种蛋孵化率起决定性影响,保存期1周内孵化率最佳,超过1周则孵化率明显下降。翻不翻蛋对种蛋孵化率的影响显著,但显著影响早期和中后期胚胎死亡率。放置方式对保存期在10d以内的种蛋受精率、受精蛋孵化率、胚胎早期死亡率、胚胎中后期死亡率没有影响;种蛋保存期超过10d时,锐端向下存放可提高孵化率。
Aecording to the storage time of hatching eggs（1-3 d,4-6 d,7-9 d,10-12 d）,thc ways of placement（the small head of eggs upwards or downwards）,and whether turned eggs over or not,hatching eggs were divided into 16treatments to detect the effect of storage condition on hatchability.the results showed that：the storage time could pay the mainly effect on the hatehability of hatching eggs,The hatehability was the highest when the storage time within a week, and obviously,the hatchability would drop over a week.There was an significant difference on the effect of hatchability whether the eggs were overturning or not.However, it effected the rate of embryonic death significantly.The way of placement did not effect on the hatchability of fertile eggs, fertility of setting eggs,and the rate of embryonic death,which storage time is in 10 days.When the storage time is over 10 days, small head of eggs downwards could improve the hatchability.
出处
《畜禽业》
2007年第1期7-11,共5页
Livestock and Poultry Industry
关键词
种蛋
保存条件
孵化
鸡
hatching eggs
storage condition
hatch
chicken
